Here is a puzzle book that will have even the masters begging for mercy--and for more. Almost Impossible Number Puzzles has more than 275 puzzles offering a var

Readers can count on a good time with this book of numerical mysteries. They'll dig into clever number puzzles and gain confidence in their problem-solving skil

Stump your friends and family with this fun, challenging math puzzle book! Who knew that math could be so cool? Crammed with games, puzzles, and trivia, The Eve

Welcome to this huge collection of Number Searches, with 1000 puzzles! The rules of Number Search puzzles are simple: find the listed numbers in the grid. They

Packed with sudokus, number codes and much, much more, this book is a brilliant way to give your mental muscles a work-out! Perfect for puzzlers aged 6 and up.